Is there way to install this on Neon?
https://github.com/KDE/wacomtablet
Can't figure out what packages are needed to get this working.
Any help appreciated!

Read the readme file and follow the instructions

I thought there is maybe debian/ubuntu/neon package (I use neon). Installation isn't easy for such basic tool...

A quick apt-cache search wacom produces the following on my system:

> apt-cache search wacom
libmypaint-common - brush library for mypaint - common files
libmypaint-doc - brush library for mypaint - documentation
libwacom-bin - Wacom model feature query library -- binaries
libwacom-common - Wacom model feature query library (common files)
libwacom-dev - Wacom model feature query library (development files)
libwacom2 - Wacom model feature query library
libwacom2-dbg - Wacom model feature query library (debug files)
mypaint - paint program for use with graphics tablets
mypaint-data - runtime data files for MyPaint
mypaint-data-extras - high resolution backgrounds for mypaint
mypaint-brushes - brushes for paint apps
xserver-xorg-input-wacom - X.Org X server -- Wacom input driver

If you are on Kubuntu you might get even more hits. Have you tried installing the xserver package?

I use KDE Neon. Tablet is recognized and working, what's lacking is GUI allowing to set it up...

We have https://cgit.kde.org/wacomtablet.git/

Not sure why this is not shipped with Neon.